Convert an Int array to a String array in Kotlin

This article explores different ways to convert an Int array to a string array in Kotlin.

1. Using `map()` function

A simple and fairly efficient solution is to use the map() function to convert each value in the integer array to a String.

fun main() {

val intArray = intArrayOf(1, 2, 3, 4, 5)

val stringArray = intArray.map { it.toString() }.toTypedArray()

println(stringArray.contentToString()) // [1, 2, 3, 4, 5]

}

Another approach is to use for-loops. The idea is to create a string array and assign values to it after converting the integer values to String.

fun main() {

val intArray: IntArray = intArrayOf(1, 2, 3, 4, 5)

val stringArray: Array<String?> = arrayOfNulls(intArray.size)

for (i in intArray.indices) {

stringArray[i] = intArray[i].toString()

}

println(stringArray.contentToString()) // [1, 2, 3, 4, 5]

}

That’s all about converting int array to string array in Kotlin.